Rectangle(Dimension d) constructor from Rectangle has the following syntax.
public Rectangle(Dimension d)
In the following code shows how to use Rectangle.Rectangle(Dimension d) constructor.
import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; // w w w . ja va 2 s . com import javax.swing.JFrame; import javax.swing.JPanel; public class Main extends JPanel { public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; Rectangle r = new Rectangle (new Dimension(10,10)); g2.fill (r); System.out.println (r.isEmpty()); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.getContentPane().add(new Main()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200, 200); frame.setVisible(true); } }